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SULFIDE,
continued
7.
Add 1.0 mL of
Sulfide 2 Reagent to
each cell and cap.
Immediately swirl to
mix.
Note: A pink color will
develop. Then the
solution will turn blue if
sulfide is present.
5 minutes
8.
Wait 5 minutes.
61-84
9.
Place the blank in
the cell holder.
Note: Typical indoor
lighting permits the
DR/700 to operate with
the cell compartment
cover open. In bright
sunlight, it may be
necessary to close the
cell compartment cover,
Transfer 10 mL of the
blank solution to a
10-mL cell. If the
10-mL cell is used for the
blank, another 10-mL
cell must be used for the
sample.
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